SETI@home Version 7 has been released


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Alex2
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Message 1377623 - Posted: 6 Jun 2013, 20:37:10 UTC

I'd like to get a hint of why v7 and Lunatics v7 are 30% slower on my Cuda5?

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Message 1377627 - Posted: 6 Jun 2013, 20:47:22 UTC - in response to Message 1377623.

I'd like to get a hint of why v7 and Lunatics v7 are 30% slower on my Cuda5?


Confirm this. I don't know precition value 30% or other but slower

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Message 1377654 - Posted: 6 Jun 2013, 21:19:22 UTC - in response to Message 1377623.

I'd like to get a hint of why v7 and Lunatics v7 are 30% slower on my Cuda5?


Mostly because of additional processing with v7 vs v6. And 30% is (IMO) below average. Even "shorties" on my 5xx GPU's are running double or more the previous times.
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Message 1377882 - Posted: 7 Jun 2013, 8:18:23 UTC - in response to Message 1377654.

I'd like to get a hint of why v7 and Lunatics v7 are 30% slower on my Cuda5?

Mostly because of additional processing with v7 vs v6. And 30% is (IMO) below average. Even "shorties" on my 5xx GPU's are running double or more the previous times.

The extra amount of processing required is pretty constant across all ARs. So it actually shows up most (it's a higher %age increase) for shorties - it's less noticeable at lower ARs.

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Message 1378395 - Posted: 8 Jun 2013, 1:54:49 UTC - in response to Message 1377340.

But I don't know what else he may have had on his plate this week or if he is in the lab.

There is the 222nd meeting of the American Astronomical Society this week in Indianapolis.
See an article mentioning it here
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Message 1378399 - Posted: 8 Jun 2013, 2:10:34 UTC

I getting a notice to upgrade the gpu. I also keep getting computation error on everything. Anyone know whats going on

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Message 1378400 - Posted: 8 Jun 2013, 2:14:40 UTC - in response to Message 1378399.

I getting a notice to upgrade the gpu. I also keep getting computation error on everything. Anyone know whats going on

A notice to upgrade the GPU? From where or what? I don't think Boinc has any such messages.
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Message 1378401 - Posted: 8 Jun 2013, 2:20:06 UTC - in response to Message 1378400.


Old video hardware, older driver.
Error message on the errored WUs- too many exits.
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Message 1378512 - Posted: 8 Jun 2013, 8:34:13 UTC - in response to Message 1377654.

I'd like to get a hint of why v7 and Lunatics v7 are 30% slower on my Cuda5?


Mostly because of additional processing with v7 vs v6. And 30% is (IMO) below average. Even "shorties" on my 5xx GPU's are running double or more the previous times.


Hmmm... Even my Geforce GTX 650 (2 GB GDDR5) is now 30% SLOWER!!! :(

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Message 1378516 - Posted: 8 Jun 2013, 8:43:39 UTC

If you care to look through "number crunching" you will find an explanation (several threads) - In short, there are some new "features" added which add an overhead to the task duration, the processing time for these far exceeds the performance gain from the core task.
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Martin Berndt
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Message 1378519 - Posted: 8 Jun 2013, 8:50:26 UTC - in response to Message 1378516.
Last modified: 8 Jun 2013, 8:52:00 UTC

If you care to look through "number crunching" you will find an explanation (several threads) - In short, there are some new "features" added which add an overhead to the task duration, the processing time for these far exceeds the performance gain from the core task.


Well... I can also tell it much easier: SHIT CODE! :p
Please give us back v6!

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Message 1378528 - Posted: 8 Jun 2013, 9:32:19 UTC - in response to Message 1378519.

If you care to look through "number crunching" you will find an explanation (several threads) - In short, there are some new "features" added which add an overhead to the task duration, the processing time for these far exceeds the performance gain from the core task.


Well... I can also tell it much easier: SHIT CODE! :p
Please give us back v6!


I would say some actively refuse to read and understand what other wrote.
NEW SEARCH ADDED ! Comprehend ?
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Message 1378536 - Posted: 8 Jun 2013, 10:13:32 UTC - in response to Message 1378528.

Wasting GPU power for nothing --> disabled

Maybe some months later again if they fix the worst bugs!

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Message 1378546 - Posted: 8 Jun 2013, 10:33:36 UTC - in response to Message 1378536.
Last modified: 8 Jun 2013, 10:39:30 UTC

Wasting GPU power for nothing --> disabled

Maybe some months later again if they fix the worst bugs!

You're not wasting GPU power, you're producing good science with your GPU, you haven't errored any GPU tasks out, so you haven't encountered any Bugs:

All tasks for computer 6504517

Application details for host 6504517

Just because the the autocorrection code isn't ultra fast doesn't mean it's Buggy, it's just New,
expect over the next couple of years that the autocorrection code, as well as a lot of the other code will get further optimised as the volunteer developers experiment,
and if it wasn't for the volunteer developers, we would only have v7 CPU apps and slower CPU apps at that.

When you're devised a better method of doing the autocorrection search please let us know, then it can be fed back into the source.

Claggy

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Message 1378550 - Posted: 8 Jun 2013, 10:42:40 UTC - in response to Message 1378546.
Last modified: 8 Jun 2013, 10:42:52 UTC

Wasting GPU power for nothing --> disabled

Maybe some months later again if they fix the worst bugs!

You're not wasting GPU power, you're producing good science with your GPU, you haven't errored any GPU tasks out, so you haven't encountered any Bugs,

Just because the the autocorrection code isn't ultra fast doesn't mean it's Buggy, it's just New,
expect over the next couple of years that the autocorrection code, as well as a lot of the other code will get further optimised as the volunteer developers experiment,
and if it wasn't for the volunteer developers, we would only have v7 CPU apps and slower CPU apps at that.

When you're devised a better method of doing the autocorrection search please let us know, then it can be fed back into the source.

Claggy

Well said Claggy ! +100 !!!
I love >>

You're not wasting GPU power, you're producing good science with your GPU

For my part, I spend at NVIDIA next week ! Finally ! :)
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Martin Berndt
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Message 1378554 - Posted: 8 Jun 2013, 10:54:10 UTC - in response to Message 1378546.
Last modified: 8 Jun 2013, 10:56:50 UTC



When you're devised a better method of doing the autocorrection search please let us know, then it can be fed back into the source.

Claggy


Well... I would also help if I could, so give me your source! :p

(Yes, I'm assembler programmer already 30 years. And bugs not only create errors.)

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Message 1378559 - Posted: 8 Jun 2013, 11:07:08 UTC - in response to Message 1378554.
Last modified: 8 Jun 2013, 11:08:54 UTC



When you're devised a better method of doing the autocorrection search please let us know, then it can be fed back into the source.

Claggy


Well... I would also help if I could, so give me your source! :p

(Yes, I'm assembler programmer already 30 years. And bugs not only create errors.)

It's on the front page, Porting and optimizing SETI@home

You want the XBranch for the Cuda app: branches/sah_v7_opt @ 1862

Claggy

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Message 1378561 - Posted: 8 Jun 2013, 11:33:09 UTC - in response to Message 1378546.

I think it's autocorrelation not autocorrection ;-)

Gruß,
Gundolf

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Message 1378565 - Posted: 8 Jun 2013, 12:11:04 UTC - in response to Message 1378561.

I think it's autocorrelation not autocorrection ;-)

Gruß,
Gundolf

True, looks as i've been guity of calling them that for sometime, but in mitigation, the stderr.txt doesn't give the full word, just 'Autocorr count'

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Message 1378622 - Posted: 8 Jun 2013, 17:02:57 UTC - in response to Message 1378519.

If you care to look through "number crunching" you will find an explanation (several threads) - In short, there are some new "features" added which add an overhead to the task duration, the processing time for these far exceeds the performance gain from the core task.


Well... I can also tell it much easier: SHIT CODE! :p
Please give us back v6!

IMO, since V7 does so much more going back to V6 would be the waste.
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